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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs.
Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	|| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	|| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
99	#else	116	#else
100	# define LOCK (void)0	117	# define LOCK (void)0
101	# define UNLOCK (void)0	118	# define UNLOCK (void)0
102	#endif	119	#endif
103		120
		121	/* helper storage struct for Coro::AIO */
104	struct io_state	122	struct io_state
105	{	123	{
106	int errorno;	124	int errorno;
107	I32 laststype;	125	I32 laststype;
108	int laststatval;	126	int laststatval;
109	Stat_t statcache;	127	Stat_t statcache;
110	};	128	};
111		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
112	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
113	static AV *main_mainstack; /* used to differentiate between $main and others */	132	static AV *main_mainstack; /* used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
114	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
115	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
116		141
117	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
118	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
119		144
120	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
121	typedef struct coro_cctx {	146	typedef struct coro_cctx {
122	struct coro_cctx *next;	147	struct coro_cctx *next;
123		148
124	/* the stack */	149	/* the stack */
125	void *sptr;	150	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
127		152
128	/* cpu state */	153	/* cpu state */
129	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	154	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		155	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
130	JMPENV *top_env;	156	JMPENV *top_env;
131	coro_context cctx;	157	coro_context cctx;
132		158
133	int inuse;
134
135	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
136	int valgrind_id;	160	int valgrind_id;
137	#endif	161	#endif
		162	char inuse, mapped;
138	} coro_cctx;	163	} coro_cctx;
139		164
140	enum {	165	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	166	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	167	CF_READY = 0x0002, /* coroutine is ready */
143	CF_NEW = 0x0004, /* ahs never been switched to */	168	CF_NEW = 0x0004, /* has never been switched to */
		169	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
144	};	170	};
145		171
146	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
147	struct coro {	173	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
…		…
156		182
157	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
158	AV *defav; /* @_ */	184	AV *defav; /* @_ */
159	SV *defsv; /* $_ */	185	SV *defsv; /* $_ */
160	SV *errsv; /* $@ */	186	SV *errsv; /* $@ */
		187	GV *deffh; /* default filehandle */
161	SV *irssv; /* $/ */	188	SV *irssv; /* $/ */
		189	SV *irssv_sv; /* real $/ cache */
162		190
163	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
164	# include "state.h"	192	# include "state.h"
165	#undef VAR	193	#undef VAR
166		194
167	/* coro process data */	195	/* coro process data */
168	int prio;	196	int prio;
		197
		198	/* linked list */
		199	struct coro *next, *prev;
		200	HV *hv; /* the perl hash associated with this coro, if any */
169	};	201	};
170		202
171	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
173		205
		206	/** Coro ********************************************************************/
		207
		208	#define PRIO_MAX 3
		209	#define PRIO_HIGH 1
		210	#define PRIO_NORMAL 0
		211	#define PRIO_LOW -1
		212	#define PRIO_IDLE -3
		213	#define PRIO_MIN -4
		214
		215	/* for Coro.pm */
		216	static SV *coro_current;
		217	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		218	static int coro_nready;
		219	static struct coro *coro_first;
		220
		221	/** lowlevel stuff **********************************************************/
		222
174	static AV *	223	static AV *
175	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
176	{	225	{
177	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
178	AV *newpadlist, *newpad;	227	AV *newpadlist, *newpad;
179		228
180	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
192		241
193	return newpadlist;	242	return newpadlist;
194	}	243	}
195		244
196	static void	245	static void
197	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
198	{	247	{
199	/* may be during global destruction */	248	/* may be during global destruction */
200	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
201	{	250	{
202	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
223	AV *padlist;	272	AV *padlist;
224	AV *av = (AV *)mg->mg_obj;	273	AV *av = (AV *)mg->mg_obj;
225		274
226	/* casting is fun. */	275	/* casting is fun. */
227	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	276	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
228	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
229		278
230	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
231		280
232	return 0;	281	return 0;
233	}	282	}
…		…
243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
244	: 0	293	: 0
245		294
246	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
247	static void	296	static void
248	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
249	{	298	{
250	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
251	AV *av;	300	AV *av;
252		301
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	304	else
256	{	305	{
257	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
263	#else	312	#else
264	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265	#endif	314	#endif
266	}	315	}
267	}	316	}
268		317
269	static void	318	static void
270	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
271	{	320	{
272	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
273	AV *av;	322	AV *av;
274		323
275	if (!mg)	324	if (!mg)
…		…
286	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
287		336
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	338	}
290		339
		340	/** load & save, init *******************************************************/
		341
291	#define SB do {	342	#define SB do {
292	#define SE } while (0)	343	#define SE } while (0)
293		344
294	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	345	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
295		346
296	static void	347	static void
297	load_perl (Coro__State c)	348	load_perl (pTHX_ Coro__State c)
298	{	349	{
299	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
300	# include "state.h"	351	# include "state.h"
301	#undef VAR	352	#undef VAR
302		353
303	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
304	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
305	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	356	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
306	if (c->irssv) REPLACE_SV (PL_rs , c->irssv);	357	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		358
		359	if (c->irssv)
		360	{
		361	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		362	{
		363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
		366	else
		367	{
		368	REPLACE_SV (PL_rs, c->irssv);
		369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		370	sv_setsv (c->irssv_sv, PL_rs);
		371	}
		372	}
307		373
308	{	374	{
309	dSP;	375	dSP;
310	CV *cv;	376	CV *cv;
311		377
312	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
314	{	380	{
315	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
316	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
317	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
318	}	384	}
319		385
320	PUTBACK;	386	PUTBACK;
321	}	387	}
322	}	388	}
323		389
324	static void	390	static void
325	save_perl (Coro__State c)	391	save_perl (pTHX_ Coro__State c)
326	{	392	{
327	{	393	{
328	dSP;	394	dSP;
329	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
330	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
333	/*	399	/*
334	* the worst thing you can imagine happens first - we have to save	400	* the worst thing you can imagine happens first - we have to save
335	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
336	*/	402	*/
337		403
338	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
339	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
340	for (;;)	406	for (;;)
341	{	407	{
342	while (cxix >= 0)	408	while (cxix >= 0)
343	{	409	{
344	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
345		411
346	if (CxTYPE (cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
347	{	413	{
348	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
349		415
350	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
351	{	417	{
352	EXTEND (SP, 3);	418	EXTEND (SP, 3);
353
354	PUSHs ((SV *)CvPADLIST (cv));	419	PUSHs ((SV *)CvPADLIST (cv));
355	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
356	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
357		422
358	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
359	get_padlist (cv);	424	get_padlist (aTHX_ cv);
360	}	425	}
361	}	426	}
362	#ifdef CXt_FORMAT
363	else if (CxTYPE (cx) == CXt_FORMAT)
364	{
365	/* I never used formats, so how should I know how these are implemented? */
366	/* my bold guess is as a simple, plain sub... */
367	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
368	}
369	#endif
370	}	427	}
371		428
372	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
373	break;	430	break;
374		431
375	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
376	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
377	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
378	}	435	}
379		436
380	PUTBACK;	437	PUTBACK;
381	}	438	}
382		439
383	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
384	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
385	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	442	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		443	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
386	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	444	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
387		445
388	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
389	# include "state.h"	447	# include "state.h"
390	#undef VAR	448	#undef VAR
…		…
394	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
395	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
396	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
397	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
398	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
399	static void	460	static void
400	coro_init_stacks ()	461	coro_init_stacks (pTHX)
401	{	462	{
402	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	463	PL_curstackinfo = new_stackinfo(64, 6);
403	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
404	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
405	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
406		467
407	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
408	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
409	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
410		471
411	New(50,PL_tmps_stack,128,SV*);	472	New(50,PL_tmps_stack,64,SV*);
412	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
413	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
414	PL_tmps_max = 128;	475	PL_tmps_max = 64;
415		476
416	New(54,PL_markstack,32,I32);	477	New(54,PL_markstack,16,I32);
417	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
418	PL_markstack_max = PL_markstack + 32;	479	PL_markstack_max = PL_markstack + 16;
419		480
420	#ifdef SET_MARK_OFFSET	481	#ifdef SET_MARK_OFFSET
421	SET_MARK_OFFSET;	482	SET_MARK_OFFSET;
422	#endif	483	#endif
423		484
424	New(54,PL_scopestack,32,I32);	485	New(54,PL_scopestack,16,I32);
425	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
426	PL_scopestack_max = 32;	487	PL_scopestack_max = 16;
427		488
428	New(54,PL_savestack,64,ANY);	489	New(54,PL_savestack,64,ANY);
429	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
430	PL_savestack_max = 64;	491	PL_savestack_max = 64;
431		492
432	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
433	New(54,PL_retstack,16,OP*);	494	New(54,PL_retstack,4,OP*);
434	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
435	PL_retstack_max = 16;	496	PL_retstack_max = 4;
436	#endif	497	#endif
437	}	498	}
		499	#endif
438		500
439	/*	501	/*
440	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
441	*/	503	*/
442	static void	504	static void
443	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
444	{	506	{
445	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
446	{	508	{
447	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
448	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
449		512
450	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
451	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
452		516
		517	/* unwind all extra stacks */
453	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
454	}	522	}
455		523
456	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
457	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
458		526
459	while (PL_curstackinfo)	527	while (PL_curstackinfo)
460	{	528	{
461	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
462		530
463	{ /*D*//*remove*/
464	dSP;
465	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
466	PUTBACK; /* possibly superfluous */
467	}
468
469	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
470	{
471	dounwind (-1);/*D*//*remove*/
472	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
473	}
474		533
475	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
476	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
477	PL_curstackinfo = p;	536	PL_curstackinfo = p;
478	}	537	}
…		…
484	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
485	Safefree (PL_retstack);	544	Safefree (PL_retstack);
486	#endif	545	#endif
487	}	546	}
488		547
		548	static size_t
		549	coro_rss (struct coro *coro)
		550	{
		551	size_t rss = sizeof (coro);
		552
		553	if (coro->mainstack)
		554	{
		555	if (coro->flags & CF_RUNNING)
		556	{
		557	#define VAR(name,type)coro->name = PL_ ## name;
		558	# include "state.h"
		559	#undef VAR
		560	}
		561
		562	rss += sizeof (coro->curstackinfo);
		563	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		564	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		565	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		566	rss += coro->tmps_max * sizeof (SV *);
		567	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		568	rss += coro->scopestack_max * sizeof (I32);
		569	rss += coro->savestack_max * sizeof (ANY);
		570
		571	#if !PERL_VERSION_ATLEAST (5,9,0)
		572	rss += coro->retstack_max * sizeof (OP *);
		573	#endif
		574	}
		575
		576	return rss;
		577	}
		578
		579	/** coroutine stack handling ************************************************/
		580
489	static void	581	static void
490	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
491	{	583	{
492	/*	584	/*
493	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
494	*/	586	*/
495
496	coro_init_stacks ();	587	coro_init_stacks (aTHX);
497		588
498	PL_curcop = &PL_compiling;	589	PL_curcop = &PL_compiling;
499	PL_in_eval = EVAL_NULL;	590	PL_in_eval = EVAL_NULL;
		591	PL_comppad = 0;
500	PL_curpm = 0;	592	PL_curpm = 0;
501	PL_localizing = 0;	593	PL_localizing = 0;
502	PL_dirty = 0;	594	PL_dirty = 0;
503	PL_restartop = 0;	595	PL_restartop = 0;
504		596
…		…
512	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
513	myop.op_next = Nullop;	605	myop.op_next = Nullop;
514	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
515		607
516	PUSHMARK (SP);	608	PUSHMARK (SP);
517	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	609	XPUSHs (av_shift (GvAV (PL_defgv)));
518	PUTBACK;	610	PUTBACK;
519	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
520	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
521	SPAGAIN;	613	SPAGAIN;
522	}	614	}
523		615
524	ENTER; /* necessary e.g. for dounwind */	616	ENTER; /* necessary e.g. for dounwind */
525	}	617	}
526		618
527	static void	619	static void
528	free_coro_mortal ()	620	free_coro_mortal (pTHX)
529	{	621	{
530	if (coro_mortal)	622	if (coro_mortal)
531	{	623	{
532	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
533	coro_mortal = 0;	625	coro_mortal = 0;
534	}	626	}
535	}	627	}
536		628
537	/* inject a fake call to Coro::State::_cctx_init into the execution */	629	/* inject a fake call to Coro::State::_cctx_init into the execution */
		630	/* _cctx_init should be careful, as it could be called at almost any time */
		631	/* during execution of a perl program */
538	static void NOINLINE	632	static void NOINLINE
539	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
540	{	634	{
541	dSP;	635	dSP;
542	LOGOP myop;	636	LOGOP myop;
543		637
544	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
…		…
553	PL_op = (OP *)&myop;	647	PL_op = (OP *)&myop;
554	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
555	SPAGAIN;	649	SPAGAIN;
556	}	650	}
557		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
558	static void	655	static void
559	coro_run (void *arg)	656	coro_run (void *arg)
560	{	657	{
		658	dTHX;
		659
561	/* coro_run is the alternative tail of transfer(), so unlock here. */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
562	UNLOCK;	661	UNLOCK;
563		662
564	/*
565	* this is a _very_ stripped down perl interpreter ;)
566	*/
567	PL_top_env = &PL_start_env;	663	PL_top_env = &PL_start_env;
568		664
569	/* inject call to cctx_init */	665	/* inject a fake subroutine call to cctx_init */
570	prepare_cctx ((coro_cctx *)arg);	666	prepare_cctx (aTHX_ (coro_cctx *)arg);
571		667
572	/* somebody will hit me for both perl_run and PL_restartop */	668	/* somebody or something will hit me for both perl_run and PL_restartop */
573	PL_restartop = PL_op;	669	PL_restartop = PL_op;
574	perl_run (PL_curinterp);	670	perl_run (PL_curinterp);
575		671
576	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	672	/*
577	abort ();	673	* If perl-run returns we assume exit() was being called or the coro
		674	* fell off the end, which seems to be the only valid (non-bug)
		675	* reason for perl_run to return. We try to exit by jumping to the
		676	* bootstrap-time "top" top_env, as we cannot restore the "main"
		677	* coroutine as Coro has no such concept
		678	*/
		679	PL_top_env = main_top_env;
		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
578	}	681	}
579		682
580	static coro_cctx *	683	static coro_cctx *
581	cctx_new ()	684	cctx_new ()
582	{	685	{
583	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
584		689
585	++cctx_count;	690	++cctx_count;
586		691
587	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
588		693
589	#if HAVE_MMAP	694	#if HAVE_MMAP
590		695
591	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
592	/* mmap supposedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
593	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	698	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
594		699
595	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
596	{
597	perror ("FATAL: unable to mmap stack for coroutine");
598	_exit (EXIT_FAILURE);
599	}	701	{
600
601	# if STACKGUARD	702	# if CORO_STACKGUARD
602	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
603	# endif	704	# endif
		705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		707	cctx->mapped = 1;
		708	}
		709	else
		710	#endif
		711	{
		712	cctx->ssize = coro_stacksize * (long)sizeof (long);
		713	New (0, cctx->sptr, coro_stacksize, long);
604		714
605	#else
606
607	cctx->ssize = STACKSIZE * (long)sizeof (long);
608	New (0, cctx->sptr, STACKSIZE, long);
609
610	if (!cctx->sptr)	715	if (!cctx->sptr)
611	{	716	{
612	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
613	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
614	}	719	}
615		720
616	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
617		724
618	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
619	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
620	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
621	cctx->ssize + (char *)cctx->sptr
622	);
623	#endif
624
625	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	726	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
626		727
627	return cctx;	728	return cctx;
628	}	729	}
629		730
630	static void	731	static void
…		…
633	if (!cctx)	734	if (!cctx)
634	return;	735	return;
635		736
636	--cctx_count;	737	--cctx_count;
637		738
638	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
639	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
640	#endif	741	#endif
641		742
642	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
643	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
644	#else	746	else
		747	#endif
645	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
646	#endif
647		749
648	Safefree (cctx);	750	Safefree (cctx);
649	}	751	}
650		752
651	static coro_cctx *	753	static coro_cctx *
652	cctx_get ()	754	cctx_get (pTHX)
653	{	755	{
654	coro_cctx *cctx;
655
656	if (cctx_first)	756	while (cctx_first)
657	{	757	{
658	cctx = cctx_first;	758	coro_cctx *cctx = cctx_first;
659	cctx_first = cctx->next;	759	cctx_first = cctx->next;
660	--cctx_idle;	760	--cctx_idle;
		761
		762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
661	}	766	}
662	else	767
663	{
664	cctx = cctx_new ();
665	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
666	}
667
668	return cctx;	769	return cctx_new ();
669	}	770	}
670		771
671	static void	772	static void
672	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
673	{	774	{
…		…
685	++cctx_idle;	786	++cctx_idle;
686	cctx->next = cctx_first;	787	cctx->next = cctx_first;
687	cctx_first = cctx;	788	cctx_first = cctx;
688	}	789	}
689		790
		791	/** coroutine switching *****************************************************/
		792
690	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
691	static void NOINLINE	794	static void NOINLINE
692	transfer (struct coro *prev, struct coro *next)	795	transfer (pTHX_ struct coro *prev, struct coro *next)
693	{	796	{
694	dSTACKLEVEL;	797	dSTACKLEVEL;
695		798
696	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
697	if (!next)	800	if (!next)
		801	{
698	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		803	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		804	}
699	else if (prev != next)	805	else if (prev != next)
700	{	806	{
701	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
702		808
703	if (prev->flags & CF_NEW)	809	if (prev->flags & CF_NEW)
…		…
714	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	820	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
715		821
716	if (next->flags & CF_RUNNING)	822	if (next->flags & CF_RUNNING)
717	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	823	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
718		824
		825	if (next->flags & CF_DESTROYED)
		826	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		827
719	prev->flags &= ~CF_RUNNING;	828	prev->flags &= ~CF_RUNNING;
720	next->flags |= CF_RUNNING;	829	next->flags |= CF_RUNNING;
721		830
722	LOCK;	831	LOCK;
723		832
724	if (next->flags & CF_NEW)	833	if (next->flags & CF_NEW)
725	{	834	{
726	/* need to start coroutine */	835	/* need to start coroutine */
727	next->flags &= ~CF_NEW;	836	next->flags &= ~CF_NEW;
728	/* first get rid of the old state */	837	/* first get rid of the old state */
729	save_perl (prev);	838	save_perl (aTHX_ prev);
730	/* setup coroutine call */	839	/* setup coroutine call */
731	setup_coro (next);	840	setup_coro (aTHX_ next);
732	/* need a new stack */	841	/* need a new stack */
733	assert (!next->stack);	842	assert (!next->cctx);
734	}	843	}
735	else	844	else
736	{	845	{
737	/* coroutine already started */	846	/* coroutine already started */
738	save_perl (prev);	847	save_perl (aTHX_ prev);
739	load_perl (next);	848	load_perl (aTHX_ next);
740	}	849	}
741		850
742	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
743		852
744	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
745	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
746	{	855	{
747	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	856	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
748	assert (PL_top_env == prev__cctx->top_env);	857	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
749		858
750	prev->cctx = 0;	859	prev->cctx = 0;
751		860
752	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
753	prev__cctx->inuse = 0;	862	prev__cctx->inuse = 0;
754	}	863	}
755		864
756	if (!next->cctx)	865	if (!next->cctx)
757	{	866	{
758	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
759	assert (!next->cctx->inuse);	868	assert (!next->cctx->inuse);
760	next->cctx->inuse = 1;	869	next->cctx->inuse = 1;
761	}	870	}
762		871
763	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
…		…
765	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
766	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
767	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
768	}	877	}
769		878
770	free_coro_mortal ();	879	free_coro_mortal (aTHX);
771
772	UNLOCK;	880	UNLOCK;
773	}	881	}
774	}	882	}
775		883
776	struct transfer_args	884	struct transfer_args
777	{	885	{
778	struct coro *prev, *next;	886	struct coro *prev, *next;
779	};	887	};
780		888
781	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
782		890
		891	/** high level stuff ********************************************************/
		892
783	static void	893	static int
784	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
785	{	895	{
786	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
787	return;	897	return 0;
		898
		899	coro->flags |= CF_DESTROYED;
		900
		901	if (coro->flags & CF_READY)
		902	{
		903	/* reduce nready, as destroying a ready coro effectively unreadies it */
		904	/* alternative: look through all ready queues and remove the coro */
		905	LOCK;
		906	--coro_nready;
		907	UNLOCK;
		908	}
		909	else
		910	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
788		911
789	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
790	{	913	{
791	struct coro temp;	914	struct coro temp;
		915
		916	assert (!(coro->flags & CF_RUNNING));
		917
792	Zero (&temp, 1, struct coro);	918	Zero (&temp, 1, struct coro);
793	temp.save = CORO_SAVE_ALL;	919	temp.save = CORO_SAVE_ALL;
794		920
795	if (coro->flags & CF_RUNNING)	921	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	922	croak ("FATAL: tried to destroy currently running coroutine");
797		923
798	save_perl (&temp);	924	save_perl (aTHX_ &temp);
799	load_perl (coro);	925	load_perl (aTHX_ coro);
800		926
801	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
802		928
803	load_perl (&temp); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
804		930
805	coro->mainstack = 0;	931	coro->mainstack = 0;
806	}	932	}
807		933
808	cctx_destroy (coro->cctx);	934	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
810	Safefree (coro);	936
		937	if (coro->next) coro->next->prev = coro->prev;
		938	if (coro->prev) coro->prev->next = coro->next;
		939	if (coro == coro_first) coro_first = coro->next;
		940
		941	return 1;
811	}	942	}
812		943
813	static int	944	static int
814	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	945	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
815	{	946	{
816	struct coro *coro = (struct coro *)mg->mg_ptr;	947	struct coro *coro = (struct coro *)mg->mg_ptr;
817	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
818		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
819	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
820		957
821	return 0;	958	return 0;
822	}	959	}
823		960
824	static int	961	static int
…		…
831	return 0;	968	return 0;
832	}	969	}
833		970
834	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	972	0, 0, 0, 0,
836	coro_state_clear,	973	coro_state_free,
837	0,	974	0,
838	#ifdef MGf_DUP	975	#ifdef MGf_DUP
839	coro_state_dup,	976	coro_state_dup,
840	#else	977	#else
841	# define MGf_DUP 0	978	# define MGf_DUP 0
842	#endif	979	#endif
843	};	980	};
844		981
845	static struct coro *	982	static struct coro *
846	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
847	{	984	{
848	HV *stash;	985	HV *stash;
849	MAGIC *mg;	986	MAGIC *mg;
850		987
851	if (SvROK (coro))	988	if (SvROK (coro))
…		…
857	/* very slow, but rare, check */	994	/* very slow, but rare, check */
858	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
859	croak ("Coro::State object required");	996	croak ("Coro::State object required");
860	}	997	}
861		998
862	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
863	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
865	}	1001	}
866		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
867	static void	1005	static void
868	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1006	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
869	{	1007	{
870	ta->prev = SvSTATE (prev_sv);	1008	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next_sv);	1009	ta->next = SvSTATE (next_sv);
872	}	1010	}
873		1011
874	static void	1012	static void
875	api_transfer (SV *prev_sv, SV *next_sv)	1013	api_transfer (SV *prev_sv, SV *next_sv)
876	{	1014	{
		1015	dTHX;
877	struct transfer_args ta;	1016	struct transfer_args ta;
878		1017
879	prepare_transfer (&ta, prev_sv, next_sv);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
880	TRANSFER (ta);	1019	TRANSFER (ta);
881	}	1020	}
882		1021
883	static int	1022	static int
884	api_save (SV *coro_sv, int new_save)	1023	api_save (SV *coro_sv, int new_save)
885	{	1024	{
		1025	dTHX;
886	struct coro *coro = SvSTATE (coro_sv);	1026	struct coro *coro = SvSTATE (coro_sv);
887	int old_save = coro->save;	1027	int old_save = coro->save;
888		1028
889	if (new_save >= 0)	1029	if (new_save >= 0)
890	coro->save = new_save;	1030	coro->save = new_save;
…		…
892	return old_save;	1032	return old_save;
893	}	1033	}
894		1034
895	/** Coro ********************************************************************/	1035	/** Coro ********************************************************************/
896		1036
897	#define PRIO_MAX 3
898	#define PRIO_HIGH 1
899	#define PRIO_NORMAL 0
900	#define PRIO_LOW -1
901	#define PRIO_IDLE -3
902	#define PRIO_MIN -4
903
904	/* for Coro.pm */
905	static SV *coro_current;
906	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
907	static int coro_nready;
908
909	static void	1037	static void
910	coro_enq (SV *coro_sv)	1038	coro_enq (pTHX_ SV *coro_sv)
911	{	1039	{
912	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
913	coro_nready++;
914	}	1041	}
915		1042
916	static SV *	1043	static SV *
917	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
918	{	1045	{
919	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
920		1047
921	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
922	if (min_prio < 0)	1049	if (min_prio < 0)
923	min_prio = 0;	1050	min_prio = 0;
924		1051
925	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
926	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
927	{
928	coro_nready--;
929	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
930	}
931		1055
932	return 0;	1056	return 0;
933	}	1057	}
934		1058
935	static int	1059	static int
936	api_ready (SV *coro_sv)	1060	api_ready (SV *coro_sv)
937	{	1061	{
		1062	dTHX;
938	struct coro *coro;	1063	struct coro *coro;
939		1064
940	if (SvROK (coro_sv))	1065	if (SvROK (coro_sv))
941	coro_sv = SvRV (coro_sv);	1066	coro_sv = SvRV (coro_sv);
942		1067
943	coro = SvSTATE (coro_sv);	1068	coro = SvSTATE (coro_sv);
944		1069
945	if (coro->flags & CF_READY)	1070	if (coro->flags & CF_READY)
946	return 0;	1071	return 0;
947		1072
948	#if 0 /* this is actually harmless */
949	if (coro->flags & CF_RUNNING)
950	croak ("Coro::ready called on currently running coroutine");
951	#endif
952
953	coro->flags |= CF_READY;	1073	coro->flags |= CF_READY;
954		1074
955	LOCK;	1075	LOCK;
956	coro_enq (SvREFCNT_inc (coro_sv));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
957	UNLOCK;	1078	UNLOCK;
958		1079
959	return 1;	1080	return 1;
960	}	1081	}
961		1082
962	static int	1083	static int
963	api_is_ready (SV *coro_sv)	1084	api_is_ready (SV *coro_sv)
964	{	1085	{
		1086	dTHX;
965	return !!SvSTATE (coro_sv)->flags & CF_READY;	1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
966	}	1088	}
967		1089
968	static void	1090	static void
969	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
970	{	1092	{
971	SV *prev, *next;	1093	SV *prev_sv, *next_sv;
972		1094
973	for (;;)	1095	for (;;)
974	{	1096	{
975	LOCK;	1097	LOCK;
976	next = coro_deq (PRIO_MIN);	1098	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1099
		1100	/* nothing to schedule: call the idle handler */
		1101	if (!next_sv)
		1102	{
		1103	dSP;
		1104	UNLOCK;
		1105
		1106	ENTER;
		1107	SAVETMPS;
		1108
		1109	PUSHMARK (SP);
		1110	PUTBACK;
		1111	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1112
		1113	FREETMPS;
		1114	LEAVE;
		1115	continue;
		1116	}
		1117
		1118	ta->next = SvSTATE (next_sv);
		1119
		1120	/* cannot transfer to destroyed coros, skip and look for next */
		1121	if (ta->next->flags & CF_DESTROYED)
		1122	{
		1123	UNLOCK;
		1124	SvREFCNT_dec (next_sv);
		1125	/* coro_nready is already taken care of by destroy */
		1126	continue;
		1127	}
		1128
		1129	--coro_nready;
977	UNLOCK;	1130	UNLOCK;
978
979	if (next)
980	break;	1131	break;
981
982	{
983	dSP;
984
985	ENTER;
986	SAVETMPS;
987
988	PUSHMARK (SP);
989	PUTBACK;
990	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991
992	FREETMPS;
993	LEAVE;
994	}	1132	}
995	}
996
997	prev = SvRV (coro_current);
998	SvRV_set (coro_current, next);
999		1133
1000	/* free this only after the transfer */	1134	/* free this only after the transfer */
1001	LOCK;	1135	prev_sv = SvRV (coro_current);
1002	free_coro_mortal ();	1136	SvRV_set (coro_current, next_sv);
1003	UNLOCK;
1004	coro_mortal = prev;
1005
1006	assert (!SvROK(prev));//D
1007	assert (!SvROK(next));//D
1008
1009	ta->prev = SvSTATE (prev);	1137	ta->prev = SvSTATE (prev_sv);
1010	ta->next = SvSTATE (next);
1011		1138
1012	assert (ta->next->flags & CF_READY);	1139	assert (ta->next->flags & CF_READY);
1013	ta->next->flags &= ~CF_READY;	1140	ta->next->flags &= ~CF_READY;
1014	}
1015		1141
		1142	LOCK;
		1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
		1145	UNLOCK;
		1146	}
		1147
1016	static void	1148	static void
1017	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1018	{	1150	{
1019	api_ready (coro_current);	1151	api_ready (coro_current);
1020
1021	prepare_schedule (ta);	1152	prepare_schedule (aTHX_ ta);
		1153	}
		1154
		1155	static int
		1156	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1157	{
		1158	if (coro_nready)
		1159	{
		1160	SV *prev = SvRV (coro_current);
		1161	prepare_schedule (aTHX_ ta);
		1162	api_ready (prev);
		1163	return 1;
		1164	}
		1165	else
		1166	return 0;
1022	}	1167	}
1023		1168
1024	static void	1169	static void
1025	api_schedule (void)	1170	api_schedule (void)
1026	{	1171	{
		1172	dTHX;
1027	struct transfer_args ta;	1173	struct transfer_args ta;
1028		1174
1029	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1030	TRANSFER (ta);	1176	TRANSFER (ta);
1031	}	1177	}
1032		1178
1033	static void	1179	static int
1034	api_cede (void)	1180	api_cede (void)
1035	{	1181	{
		1182	dTHX;
1036	struct transfer_args ta;	1183	struct transfer_args ta;
1037		1184
1038	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1039	TRANSFER (ta);	1189	TRANSFER (ta);
		1190	return 1;
		1191	}
		1192	else
		1193	return 0;
		1194	}
		1195
		1196	static int
		1197	api_cede_notself (void)
		1198	{
		1199	dTHX;
		1200	struct transfer_args ta;
		1201
		1202	if (prepare_cede_notself (aTHX_ &ta))
		1203	{
		1204	TRANSFER (ta);
		1205	return 1;
		1206	}
		1207	else
		1208	return 0;
1040	}	1209	}
1041		1210
1042	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1043		1212
1044	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1054		1223
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1056	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1057	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1058	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1227	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1228	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1229	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1059	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1060		1231
1061	main_mainstack = PL_mainstack;	1232	main_mainstack = PL_mainstack;
		1233	main_top_env = PL_top_env;
		1234
		1235	while (main_top_env->je_prev)
		1236	main_top_env = main_top_env->je_prev;
1062		1237
1063	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1064	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1065		1240
1066	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1074	HV *hv;	1249	HV *hv;
1075	int i;	1250	int i;
1076		1251
1077	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1078	coro->args = newAV ();	1253	coro->args = newAV ();
1079	coro->save = CORO_SAVE_ALL;	1254	coro->save = CORO_SAVE_DEF;
1080	coro->flags = CF_NEW;	1255	coro->flags = CF_NEW;
1081		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1082	hv = newHV ();	1261	coro->hv = hv = newHV ();
1083	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1262	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1084	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1085		1264
1086	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1087	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
…		…
1094	CODE:	1273	CODE:
1095	RETVAL = api_save (coro, new_save);	1274	RETVAL = api_save (coro, new_save);
1096	OUTPUT:	1275	OUTPUT:
1097	RETVAL	1276	RETVAL
1098		1277
		1278	int
		1279	save_also (SV *coro_sv, int save_also)
		1280	CODE:
		1281	{
		1282	struct coro *coro = SvSTATE (coro_sv);
		1283	RETVAL = coro->save;
		1284	coro->save |= save_also;
		1285	}
		1286	OUTPUT:
		1287	RETVAL
		1288
1099	void	1289	void
1100	_set_stacklevel (...)	1290	_set_stacklevel (...)
1101	ALIAS:	1291	ALIAS:
1102	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1103	Coro::schedule = 2	1293	Coro::schedule = 2
1104	Coro::cede = 3	1294	Coro::cede = 3
		1295	Coro::cede_notself = 4
1105	CODE:	1296	CODE:
1106	{	1297	{
1107	struct transfer_args ta;	1298	struct transfer_args ta;
1108		1299
1109	switch (ix)	1300	switch (ix)
…		…
1115		1306
1116	case 1:	1307	case 1:
1117	if (items != 2)	1308	if (items != 2)
1118	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1309	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1119		1310
1120	prepare_transfer (&ta, ST (0), ST (1));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1121	break;	1312	break;
1122		1313
1123	case 2:	1314	case 2:
1124	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1125	break;	1316	break;
1126		1317
1127	case 3:	1318	case 3:
1128	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
		1320	break;
		1321
		1322	case 4:
		1323	if (!prepare_cede_notself (aTHX_ &ta))
		1324	XSRETURN_EMPTY;
		1325
1129	break;	1326	break;
1130	}	1327	}
1131		1328
		1329	BARRIER;
1132	TRANSFER (ta);	1330	TRANSFER (ta);
1133	}
1134		1331
1135	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1136	_clone_state_from (SV *dst, SV *src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1137	CODE:	1338	CODE:
1138	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1139	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1140		1341	RETVAL
1141	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1142
1143	++coro_src->refcnt;
1144	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1145	}
1146		1342
1147	void	1343	void
1148	_exit (code)	1344	_exit (code)
1149	int code	1345	int code
1150	PROTOTYPE: $	1346	PROTOTYPE: $
1151	CODE:	1347	CODE:
1152	_exit (code);	1348	_exit (code);
1153		1349
1154	int	1350	int
		1351	cctx_stacksize (int new_stacksize = 0)
		1352	CODE:
		1353	RETVAL = coro_stacksize;
		1354	if (new_stacksize)
		1355	coro_stacksize = new_stacksize;
		1356	OUTPUT:
		1357	RETVAL
		1358
		1359	int
1155	cctx_count ()	1360	cctx_count ()
1156	CODE:	1361	CODE:
1157	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1158	OUTPUT:	1363	OUTPUT:
1159	RETVAL	1364	RETVAL
…		…
1163	CODE:	1368	CODE:
1164	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1165	OUTPUT:	1370	OUTPUT:
1166	RETVAL	1371	RETVAL
1167		1372
		1373	void
		1374	list ()
		1375	PPCODE:
		1376	{
		1377	struct coro *coro;
		1378	for (coro = coro_first; coro; coro = coro->next)
		1379	if (coro->hv)
		1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1381	}
		1382
		1383	void
		1384	_eval (Coro::State coro, SV *coderef)
		1385	CODE:
		1386	{
		1387	if (coro->mainstack)
		1388	{
		1389	struct coro temp;
		1390	Zero (&temp, 1, struct coro);
		1391	temp.save = CORO_SAVE_ALL;
		1392
		1393	if (!(coro->flags & CF_RUNNING))
		1394	{
		1395	save_perl (aTHX_ &temp);
		1396	load_perl (aTHX_ coro);
		1397	}
		1398
		1399	{
		1400	dSP;
		1401	ENTER;
		1402	SAVETMPS;
		1403	PUSHMARK (SP);
		1404	PUTBACK;
		1405	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1406	SPAGAIN;
		1407	FREETMPS;
		1408	LEAVE;
		1409	PUTBACK;
		1410	}
		1411
		1412	if (!(coro->flags & CF_RUNNING))
		1413	{
		1414	save_perl (aTHX_ coro);
		1415	load_perl (aTHX_ &temp);
		1416	}
		1417	}
		1418	}
		1419
		1420	SV *
		1421	is_ready (Coro::State coro)
		1422	PROTOTYPE: $
		1423	ALIAS:
		1424	is_ready = CF_READY
		1425	is_running = CF_RUNNING
		1426	is_new = CF_NEW
		1427	is_destroyed = CF_DESTROYED
		1428	CODE:
		1429	RETVAL = boolSV (coro->flags & ix);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	SV *
		1434	has_stack (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = boolSV (!!coro->cctx);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	IV
		1442	rss (Coro::State coro)
		1443	PROTOTYPE: $
		1444	CODE:
		1445	RETVAL = coro_rss (coro);
		1446	OUTPUT:
		1447	RETVAL
		1448
		1449
1168	MODULE = Coro::State PACKAGE = Coro	1450	MODULE = Coro::State PACKAGE = Coro
1169		1451
1170	BOOT:	1452	BOOT:
1171	{	1453	{
1172	int i;	1454	int i;
		1455
		1456	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1457	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1458	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1459
		1460	coro_current = get_sv ("Coro::current", FALSE);
		1461	SvREADONLY_on (coro_current);
1173		1462
1174	coro_stash = gv_stashpv ("Coro", TRUE);	1463	coro_stash = gv_stashpv ("Coro", TRUE);
1175		1464
1176	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1465	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1177	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1466	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1178	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1467	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1179	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1468	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1180	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1469	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1181	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1470	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1182		1471
1183	coro_current = get_sv ("Coro::current", FALSE);
1184	SvREADONLY_on (coro_current);
1185
1186	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1472	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1187	coro_ready[i] = newAV ();	1473	coro_ready[i] = newAV ();
1188		1474
1189	{	1475	{
1190	SV *sv = perl_get_sv("Coro::API", 1);	1476	SV *sv = perl_get_sv("Coro::API", 1);
1191		1477
1192	coroapi.schedule = api_schedule;	1478	coroapi.schedule = api_schedule;
1193	coroapi.save = api_save;	1479	coroapi.save = api_save;
1194	coroapi.cede = api_cede;	1480	coroapi.cede = api_cede;
		1481	coroapi.cede_notself = api_cede_notself;
1195	coroapi.ready = api_ready;	1482	coroapi.ready = api_ready;
1196	coroapi.is_ready = api_is_ready;	1483	coroapi.is_ready = api_is_ready;
1197	coroapi.nready = &coro_nready;	1484	coroapi.nready = &coro_nready;
1198	coroapi.current = coro_current;	1485	coroapi.current = coro_current;
1199		1486
1200	GCoroAPI = &coroapi;	1487	GCoroAPI = &coroapi;
1201	sv_setiv (sv, (IV)&coroapi);	1488	sv_setiv (sv, (IV)&coroapi);
1202	SvREADONLY_on (sv);	1489	SvREADONLY_on (sv);
1203	}	1490	}
…		…
1219	RETVAL = coro->prio;	1506	RETVAL = coro->prio;
1220		1507
1221	if (items > 1)	1508	if (items > 1)
1222	{	1509	{
1223	if (ix)	1510	if (ix)
1224	newprio += coro->prio;	1511	newprio = coro->prio - newprio;
1225		1512
1226	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1513	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1227	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1514	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1228		1515
1229	coro->prio = newprio;	1516	coro->prio = newprio;
1230	}	1517	}
1231	}	1518	}
		1519	OUTPUT:
		1520	RETVAL
1232		1521
1233	SV *	1522	SV *
1234	ready (SV *self)	1523	ready (SV *self)
1235	PROTOTYPE: $	1524	PROTOTYPE: $
1236	CODE:	1525	CODE:
1237	RETVAL = boolSV (api_ready (self));	1526	RETVAL = boolSV (api_ready (self));
1238	OUTPUT:	1527	OUTPUT:
1239	RETVAL	1528	RETVAL
1240		1529
1241	SV *
1242	is_ready (SV *self)
1243	PROTOTYPE: $
1244	CODE:
1245	RETVAL = boolSV (api_is_ready (self));
1246	OUTPUT:
1247	RETVAL
1248
1249	int	1530	int
1250	nready (...)	1531	nready (...)
1251	PROTOTYPE:	1532	PROTOTYPE:
1252	CODE:	1533	CODE:
1253	RETVAL = coro_nready;	1534	RETVAL = coro_nready;
1254	OUTPUT:	1535	OUTPUT:
1255	RETVAL	1536	RETVAL
1256		1537
		1538	# for async_pool speedup
		1539	void
		1540	_pool_1 (SV *cb)
		1541	CODE:
		1542	{
		1543	int i, len;
		1544	HV *hv = (HV *)SvRV (coro_current);
		1545	AV *defav = GvAV (PL_defgv);
		1546	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1547	AV *invoke_av;
		1548
		1549	if (!invoke)
		1550	croak ("\3terminate\2\n");
		1551
		1552	hv_store (hv, "desc", sizeof ("desc") - 1,
		1553	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1554
		1555	invoke_av = (AV *)SvRV (invoke);
		1556	len = av_len (invoke_av);
		1557
		1558	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1559
		1560	if (len > 0)
		1561	{
		1562	av_fill (defav, len - 1);
		1563	for (i = 0; i < len; ++i)
		1564	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1565	}
		1566
		1567	SvREFCNT_dec (invoke);
		1568	}
		1569
		1570	void
		1571	_pool_2 (SV *cb)
		1572	CODE:
		1573	{
		1574	struct coro *coro = SvSTATE (coro_current);
		1575
		1576	sv_setsv (cb, &PL_sv_undef);
		1577
		1578	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1579	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1580	croak ("\3terminate\2\n");
		1581
		1582	av_clear (GvAV (PL_defgv));
		1583	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1584	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1585	coro->save = CORO_SAVE_DEF;
		1586	coro->prio = 0;
		1587	av_push (av_async_pool, newSVsv (coro_current));
		1588	}
		1589
		1590
1257	MODULE = Coro::State PACKAGE = Coro::AIO	1591	MODULE = Coro::State PACKAGE = Coro::AIO
1258		1592
1259	SV *	1593	SV *
1260	_get_state ()	1594	_get_state ()
1261	CODE:	1595	CODE:

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